// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//  
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
using SharpCifs.Util;

namespace SharpCifs.Smb
{
    internal class Trans2FindFirst2 : SmbComTransaction
    {
        private const int FlagsCloseAfterThisRequest = unchecked(0x01);

        private const int FlagsCloseIfEndReached = unchecked(0x02);

        private const int FlagsReturnResumeKeys = unchecked(0x04);

        private const int FlagsResumeFromPreviousEnd = unchecked(0x08);

        private const int FlagsFindWithBackupIntent = unchecked(0x10);

        private const int DefaultListSize = 65535;

        private const int DefaultListCount = 200;

        private int _searchAttributes;

        private int _flags;

        private int _informationLevel;

        private int _searchStorageType = 0;

        private string _wildcard;

        internal const int SmbInfoStandard = 1;

        internal const int SmbInfoQueryEaSize = 2;

        internal const int SmbInfoQueryEasFromList = 3;

        internal const int SmbFindFileDirectoryInfo = unchecked(0x101);

        internal const int SmbFindFileFullDirectoryInfo = unchecked(0x102);

        internal const int SmbFileNamesInfo = unchecked(0x103);

        internal const int SmbFileBothDirectoryInfo = unchecked(0x104);

        internal static readonly int ListSize
            = Config.GetInt("jcifs.smb.client.listSize", DefaultListSize);

        internal static readonly int ListCount
            = Config.GetInt("jcifs.smb.client.listCount", DefaultListCount);

        internal Trans2FindFirst2(string filename, string wildcard, int searchAttributes)
        {
            // flags
            // information levels
            if (filename.Equals("\\"))
            {
                Path = filename;
            }
            else
            {
                Path = filename + "\\";
            }
            this._wildcard = wildcard;
            this._searchAttributes = searchAttributes & unchecked(0x37);
            Command = SmbComTransaction2;
            SubCommand = Trans2FindFirst2;
            _flags = unchecked(0x00);
            _informationLevel = SmbFileBothDirectoryInfo;
            TotalDataCount = 0;
            MaxParameterCount = 10;
            MaxDataCount = ListSize;
            MaxSetupCount = 0;
        }

        internal override int WriteSetupWireFormat(byte[] dst, int dstIndex)
        {
            dst[dstIndex++] = SubCommand;
            dst[dstIndex++] = unchecked(unchecked(0x00));
            return 2;
        }

        internal override int WriteParametersWireFormat(byte[] dst, int dstIndex)
        {
            int start = dstIndex;
            WriteInt2(_searchAttributes, dst, dstIndex);
            dstIndex += 2;
            WriteInt2(ListCount, dst, dstIndex);
            dstIndex += 2;
            WriteInt2(_flags, dst, dstIndex);
            dstIndex += 2;
            WriteInt2(_informationLevel, dst, dstIndex);
            dstIndex += 2;
            WriteInt4(_searchStorageType, dst, dstIndex);
            dstIndex += 4;
            dstIndex += WriteString(Path + _wildcard, dst, dstIndex);
            return dstIndex - start;
        }

        internal override int WriteDataWireFormat(byte[] dst, int dstIndex)
        {
            return 0;
        }

        internal override int ReadSetupWireFormat(byte[] buffer, int bufferIndex, int len)
        {
            return 0;
        }

        internal override int ReadParametersWireFormat(byte[] buffer,
                                                       int bufferIndex,
                                                       int len)
        {
            return 0;
        }

        internal override int ReadDataWireFormat(byte[] buffer, int bufferIndex, int len)
        {
            return 0;
        }

        public override string ToString()
        {
            return "Trans2FindFirst2["
                        + base.ToString()
                        + ",searchAttributes=0x" + Hexdump.ToHexString(_searchAttributes, 2)
                        + ",searchCount=" + ListCount
                        + ",flags=0x" + Hexdump.ToHexString(_flags, 2)
                        + ",informationLevel=0x" + Hexdump.ToHexString(_informationLevel, 3)
                        + ",searchStorageType=" + _searchStorageType
                        + ",filename=" + Path + "]";
        }
    }
}
